Movie Clip Editor Graph editor: How to edit single motion tracking keyframe?
Why do you need to move them? The important thing to understand here is what exactly those graphs represent: they are the speed at which the tracker is moving in an axis. They do not represent placement in x and y coordinates. So if you affect one, the speed at which the next tracking point is moving will also be affected, as the speed is relative to the speed of the previous frame. Notice how they are inversily proportiional?
More info here: Motion Tracking. What do the graphs represent and how are they useful?
To view the motion as coordinates you can create empties out of the trackers to view in 3d space. The tracking constraint can then be converted to f curves and then the motion will be just like regular keyframes in the graph editor
Bake Follow Track constraint to f-curve?